int handle_connection_not_allowed(t_session *session, int connections) {
switch (connections) {
case ca_TOOMUCH_PERIP:
log_system(session, "Maximum number of connections for IP address reached");
if ((session->config->ban_on_max_per_ip > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
log_system(session, "Client banned because of too many simultaneous connections");
ban_ip(&(session->ip_address), session->config->ban_on_max_per_ip, session->config->kick_on_ban);
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
return 444;
case ca_TOOMUCH_TOTAL:
log_system(session, "Maximum number of total connections reached");
return 503;
case ca_BANNED:
if (session->config->reban_during_ban && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
reban_ip(&(session->ip_address));
}
#ifdef ENABLE_TOMAHAWK
increment_counter(COUNTER_DENY);
#endif
return 444;
}
return 500;
}
static t_access allow_client(t_session *session) {
t_ip_addr forwarded_ip;
t_access access;
if ((access = ip_allowed(&(session->ip_address), session->host->access_list)) != allow) {
return access;
} else if (last_forwarded_ip(session->http_headers, &forwarded_ip) == -1) {
return allow;
} else if (ip_allowed(&forwarded_ip, session->host->access_list) == deny) {
return deny;
}
return unspecified;
}
static t_access allow_client(t_session *session) {
char *x_forwarded_for;
t_ip_addr forwarded_ip;
t_access access;
if ((access = ip_allowed(&(session->ip_address), session->host->access_list)) != allow) {
return access;
} else if ((x_forwarded_for = get_http_header(hs_forwarded, session->http_headers)) == NULL) {
return allow;
} else if (parse_ip(x_forwarded_for, &forwarded_ip) == -1) {
return allow;
} else if (ip_allowed(&forwarded_ip, session->host->access_list) == deny) {
return deny;
}
return unspecified;
}
int process_url_toolkit(t_session *session, char *toolkit_id, t_toolkit_options *toolkit_options) {
int result;
if ((result = use_toolkit(session->uri, toolkit_id, toolkit_options)) == UT_ERROR) {
return 500;
}
if (toolkit_options->log_request == false) {
session->log_request = false;
}
if ((toolkit_options->ban > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), toolkit_options->ban, session->config->kick_on_ban);
log_system(session, "Client banned because of URL match in UrlToolkit rule");
session->keep_alive = false;
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
return 403;
}
session->toolkit_fastcgi = toolkit_options->fastcgi_server;
if (toolkit_options->new_url != NULL) {
if (register_tempdata(&(session->tempdata), toolkit_options->new_url, tc_data) == -1) {
free(toolkit_options->new_url);
log_error(session, "error registering temporary data");
return 500;
}
session->uri = toolkit_options->new_url;
}
if (result == UT_REDIRECT) {
if ((session->location = strdup(toolkit_options->new_url)) == NULL) {
return -1;
}
session->cause_of_301 = location;
return 301;
}
if (result == UT_DENY_ACCESS) {
log_error(session, "access denied via URL toolkit rule");
return 403;
}
if (result == UT_EXIT) {
return UT_EXIT;
}
return 0;
}
/* Serve the client that connected to the webserver
*/
static int serve_client(t_session *session) {
int result, length, auth_result;
char *qmark, chr, *header;
t_host *host_record;
t_access access;
t_deny_body *deny_body;
t_req_method request_method;
t_ip_addr ip_addr;
#ifdef ENABLE_XSLT
char *xslt_file;
#endif
#ifdef ENABLE_TOOLKIT
int i;
t_toolkit_options toolkit_options;
#endif
#ifdef ENABLE_RPROXY
t_rproxy *rproxy;
#endif
#ifdef ENABLE_DEBUG
session->current_task = "fetch & parse request";
#endif
if ((result = fetch_request(session)) != 200) {
session->request_method = GET;
return result;
} else if ((result = parse_request(session, session->header_length + session->content_length)) != 200) {
session->request_method = GET;
return result;
}
#ifdef ENABLE_DEBUG
session->current_task = "serve client";
#endif
session->time = time(NULL);
/* Hide reverse proxies
*/
if (in_iplist(session->config->hide_proxy, &(session->ip_address))) {
if (last_forwarded_ip(session->http_headers, &ip_addr) == 0) {
if (reposition_client(session, &ip_addr) != -1) {
copy_ip(&(session->ip_address), &ip_addr);
}
}
}
/* SSH tunneling
*/
#ifdef ENABLE_RPROXY
if (session->request_method == CONNECT) {
if (in_iplist(session->config->tunnel_ssh, &(session->ip_address)) == false) {
return 405;
}
#ifdef ENABLE_SSL
if (session->binding->use_ssl) {
return 405;
}
#endif
if (strcmp(session->request_uri, "localhost:22") != 0) {
if (strcmp(session->request_uri, "127.0.0.1:22") != 0) {
if (strcmp(session->request_uri, "::1.22") != 0) {
return 403;
}
}
}
log_system(session, "SSH tunnel requested");
if (tunnel_ssh_connection(session->client_socket) != 0) {
log_system(session, "SSH tunnel failed");
} else {
log_system(session, "SSH tunnel terminated");
}
session->keep_alive = false;
return 200;
}
#endif
/* Find host record
*/
if (session->hostname != NULL) {
if (remove_port_from_hostname(session) == -1) {
log_error(session, "error removing port from hostname");
return 500;
}
if ((host_record = get_hostrecord(session->config->first_host, session->hostname, session->binding)) != NULL) {
session->host = host_record;
#ifdef ENABLE_TOMAHAWK
session->last_host = host_record;
#endif
}
}
session->host->access_time = session->time;
#ifdef ENABLE_SSL
/* SSL client authentication
*/
if (session->binding->use_ssl) {
if ((session->host->ca_certificate != NULL) && (ssl_has_peer_cert(&(session->ssl_context)) == false)) {
log_error(session, "Missing client SSL certificate");
return 440;
}
}
#endif
/* Enforce usage of first hostname
*/
if (session->host->enforce_first_hostname && (session->hostname != NULL)) {
if (**(session->host->hostname.item) != '*') {
if (strcmp(session->hostname, *(session->host->hostname.item)) != 0) {
session->cause_of_301 = enforce_first_hostname;
return 301;
}
}
}
/* Enforce usage of SSL
*/
#ifdef ENABLE_SSL
if (session->host->require_ssl && (session->binding->use_ssl == false)) {
if ((qmark = strchr(session->uri, '?')) != NULL) {
*qmark = '\0';
session->vars = qmark + 1;
session->uri_len = strlen(session->uri);
}
session->cause_of_301 = require_ssl;
return 301;
}
#endif
/* Deny matching bodies
*/
if (session->body != NULL) {
chr = *(session->body + session->content_length);
*(session->body + session->content_length) = '\0';
deny_body = session->host->deny_body;
while (deny_body != NULL) {
if (strpcmp(session->body, &(deny_body->pattern)) == 0) {
if ((session->config->ban_on_denied_body > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), session->config->ban_on_denied_body, session->config->kick_on_ban);
log_system(session, "Client banned because of denied body");
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
log_exploit_attempt(session, "denied body", session->body);
#ifdef ENABLE_TOMAHAWK
increment_counter(COUNTER_EXPLOIT);
#endif
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_exploit(session);
monitor_event("Request body denied for %s", session->host->hostname.item[0]);
}
#endif
*(session->body + session->content_length) = chr;
return 403;
}
deny_body = deny_body->next;
}
*(session->body + session->content_length) = chr;
}
/* Websocket
*/
if (session->request_method == GET) {
if ((header = get_http_header("Connection:", session->http_headers)) != NULL) {
if (strcasestr(header, "upgrade") != NULL) {
if ((header = get_http_header("Upgrade:", session->http_headers)) != NULL) {
if (strcasecmp(header, "websocket") == 0) {
switch (access = allow_client(session)) {
case deny:
log_error(session, fb_accesslist);
return 403;
case allow:
break;
case pwd:
case unspecified:
if ((auth_result = http_authentication_result(session, access == unspecified)) != 200) {
return auth_result;
}
}
session->keep_alive = false;
if (forward_to_websocket(session) == -1) {
return 500;
}
return 200;
}
}
}
}
}
#ifdef ENABLE_RPROXY
/* Reverse proxy
*/
rproxy = session->host->rproxy;
while (rproxy != NULL) {
if (rproxy_match(rproxy, session->request_uri)) {
if (rproxy_loop_detected(session->http_headers)) {
return 508;
}
if ((qmark = strchr(session->uri, '?')) != NULL) {
*qmark = '\0';
session->vars = qmark + 1;
}
if (validate_url(session) == false) {
return -1;
}
if ((session->vars != NULL) && (session->host->secure_url)) {
if (forbidden_chars_present(session->vars)) {
log_error(session, "URL contains forbidden characters");
return 403;
}
}
if (duplicate_host(session) == false) {
log_error(session, "duplicate_host() error");
return 500;
}
if ((result = uri_to_path(session)) != 200) {
return result;
}
if (session->host->ignore_dot_hiawatha == false) {
if (load_user_config(session) == -1) {
return 500;
}
}
if ((result = copy_directory_settings(session)) != 200) {
return result;
}
switch (access = allow_client(session)) {
case deny:
log_error(session, fb_accesslist);
return 403;
case allow:
break;
case pwd:
case unspecified:
if ((auth_result = http_authentication_result(session, access == unspecified)) != 200) {
return auth_result;
}
}
/* Prevent SQL injection
*/
if (session->host->prevent_sqli) {
result = prevent_sqli(session);
if (result == 1) {
session->error_cause = ec_SQL_INJECTION;
}
if (result != 0) {
return -1;
}
}
/* Prevent Cross-site Scripting
*/
if (session->host->prevent_xss != p_no) {
if (prevent_xss(session) > 0) {
if (session->host->prevent_xss == p_block) {
session->error_cause = ec_XSS;
return -1;
}
}
}
/* Prevent Cross-site Request Forgery
*/
if (session->host->prevent_csrf != p_no) {
if (prevent_csrf(session) > 0) {
if (session->host->prevent_csrf == p_block) {
session->error_cause = ec_CSRF;
return -1;
}
}
}
return proxy_request(session, rproxy);
}
rproxy = rproxy->next;
}
#endif
/* Actions based on request method
*/
switch (session->request_method) {
case TRACE:
if (session->binding->enable_trace == false) {
return 501;
}
return handle_trace_request(session);
case PUT:
case DELETE:
if ((session->binding->enable_alter == false) && (session->host->webdav_app == false)) {
return 501;
}
break;
case unknown:
return 400;
case unsupported:
if (session->host->webdav_app == false) {
return 501;
}
break;
default:
break;
}
if (duplicate_host(session) == false) {
log_error(session, "duplicate_host() error");
return 500;
}
#ifdef ENABLE_TOOLKIT
if (session->host->ignore_dot_hiawatha == false) {
if (load_user_root_config(session) == -1) {
return 500;
}
}
/* URL toolkit
*/
init_toolkit_options(&toolkit_options);
toolkit_options.method = session->method;
toolkit_options.website_root = session->host->website_root;
toolkit_options.url_toolkit = session->config->url_toolkit;
toolkit_options.allow_dot_files = session->host->allow_dot_files;
toolkit_options.http_headers = session->http_headers;
#ifdef ENABLE_SSL
toolkit_options.use_ssl = session->binding->use_ssl;
#endif
if (((session->request_method != PUT) && (session->request_method != DELETE)) || session->host->webdav_app) {
for (i = 0; i < session->host->toolkit_rules.size; i++) {
if ((result = use_toolkit(session->uri, session->host->toolkit_rules.item[i], &toolkit_options)) == UT_ERROR) {
return 500;
}
if ((toolkit_options.ban > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), toolkit_options.ban, session->config->kick_on_ban);
log_system(session, "Client banned because of URL match in UrlToolkit rule");
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
return 403;
}
session->toolkit_fastcgi = toolkit_options.fastcgi_server;
if (toolkit_options.new_url != NULL) {
if (register_tempdata(&(session->tempdata), toolkit_options.new_url, tc_data) == -1) {
free(toolkit_options.new_url);
log_error(session, "error registering temporary data");
return 500;
}
session->uri = toolkit_options.new_url;
}
if (result == UT_REDIRECT) {
if ((session->location = strdup(toolkit_options.new_url)) == NULL) {
return -1;
}
session->cause_of_301 = location;
return 301;
}
if (result == UT_DENY_ACCESS) {
log_error(session, "access denied via URL toolkit rule");
return 403;
}
if (toolkit_options.expire > -1) {
session->expires = toolkit_options.expire;
session->caco_private = toolkit_options.caco_private;
}
}
}
#endif
/* Find GET data
*/
if ((qmark = strchr(session->uri, '?')) != NULL) {
*qmark = '\0';
session->vars = qmark + 1;
}
url_decode(session->uri);
session->uri_len = strlen(session->uri);
if ((session->vars != NULL) && (session->host->secure_url)) {
if (forbidden_chars_present(session->vars)) {
log_error(session, "URL contains forbidden characters");
return 403;
}
}
if (validate_url(session) == false) {
return -1;
}
if ((result = uri_to_path(session)) != 200) {
return result;
}
/* Load configfile from directories
*/
if (session->host->ignore_dot_hiawatha == false) {
if (load_user_config(session) == -1) {
return 500;
}
}
if ((result = copy_directory_settings(session)) != 200) {
return result;
}
switch (access = allow_client(session)) {
case deny:
log_error(session, fb_accesslist);
return 403;
case allow:
break;
case pwd:
case unspecified:
if ((auth_result = http_authentication_result(session, access == unspecified)) != 200) {
return auth_result;
}
}
switch (is_directory(session->file_on_disk)) {
case error:
return 500;
case yes:
session->uri_is_dir = true;
break;
case no:
if (((session->request_method != PUT) || session->host->webdav_app) && (session->host->enable_path_info)) {
if ((result = get_path_info(session)) != 200) {
return result;
}
}
break;
case no_access:
log_error(session, fb_filesystem);
return 403;
case not_found:
if (session->request_method == DELETE) {
return 404;
}
}
#ifdef ENABLE_TOOLKIT
if ((session->toolkit_fastcgi == NULL) && session->uri_is_dir) {
#else
if (session->uri_is_dir) {
#endif
length = strlen(session->file_on_disk);
if (*(session->file_on_disk + length - 1) == '/') {
strcpy(session->file_on_disk + length, session->host->start_file);
} else {
return 301;
}
}
if (get_target_extension(session) == -1) {
log_error(session, "error getting extension");
return 500;
}
if (((session->request_method != PUT) && (session->request_method != DELETE)) || session->host->webdav_app) {
check_target_is_cgi(session);
}
/* Handle request based on request method
*/
request_method = session->request_method;
if (session->host->webdav_app) {
if ((request_method == PUT) || (request_method == DELETE)) {
request_method = POST;
}
}
switch (request_method) {
case GET:
case HEAD:
if (session->cgi_type != no_cgi) {
session->body = NULL;
result = execute_cgi(session);
#ifdef ENABLE_XSLT
} else if ((xslt_file = find_xslt_file(session)) != NULL) {
result = handle_xml_file(session, xslt_file);
free(xslt_file);
#endif
} else {
result = send_file(session);
}
if (result == 404) {
#ifdef ENABLE_XSLT
if ((session->host->show_index != NULL) && (session->uri[session->uri_len - 1] == '/')) {
result = show_index(session);
}
#endif
#ifdef ENABLE_MONITOR
} else if (session->config->monitor_enabled) {
if ((result == 200) && (session->host->monitor_host)) {
unlink(session->file_on_disk);
}
#endif
}
if ((session->request_method == GET) && (session->cgi_type == no_cgi) && (session->directory != NULL)) {
if (session->directory->run_on_download != NULL) {
run_program(session, session->directory->run_on_download, result);
}
}
break;
case POST:
case unsupported:
if (session->cgi_type != no_cgi) {
result = execute_cgi(session);
#ifdef ENABLE_XSLT
} else if ((xslt_file = find_xslt_file(session)) != NULL) {
result = handle_xml_file(session, xslt_file);
free(xslt_file);
#endif
} else {
result = 405;
}
break;
case PUT:
result = handle_put_request(session);
if (((result == 201) || (result == 204)) && (session->host->run_on_alter != NULL)) {
run_program(session, session->host->run_on_alter, result);
}
break;
case DELETE:
result = handle_delete_request(session);
if ((result == 204) && (session->host->run_on_alter != NULL)) {
run_program(session, session->host->run_on_alter, result);
}
break;
case WHEN:
send_code(session);
break;
default:
result = 400;
}
return result;
}
/* Handle timeout upon sending request
*/
static void handle_timeout(t_session *session) {
if ((session->config->ban_on_timeout > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), session->config->ban_on_timeout, session->config->kick_on_ban);
log_system(session, "Client banned because of connection timeout");
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
} else {
log_system(session, "Timeout while waiting for first request");
}
}
/* Request has been handled, handle the return code.
*/
static void handle_request_result(t_session *session, int result) {
char *hostname;
#ifdef ENABLE_DEBUG
session->current_task = "handle request result";
#endif
if (result == -1) switch (session->error_cause) {
case ec_MAX_REQUESTSIZE:
log_system(session, "Maximum request size reached");
session->return_code = 413;
send_code(session);
if ((session->config->ban_on_max_request_size > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), session->config->ban_on_max_request_size, session->config->kick_on_ban);
log_system(session, "Client banned because of sending a too large request");
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
break;
case ec_TIMEOUT:
if (session->kept_alive == 0) {
session->return_code = 408;
send_code(session);
handle_timeout(session);
}
break;
case ec_CLIENT_DISCONNECTED:
if (session->kept_alive == 0) {
log_system(session, "Silent client disconnected");
}
break;
case ec_SOCKET_READ_ERROR:
if (errno != ECONNRESET) {
log_system(session, "Error while reading request");
}
break;
case ec_SOCKET_WRITE_ERROR:
log_request(session);
break;
case ec_FORCE_QUIT:
log_system(session, "Client kicked");
break;
case ec_SQL_INJECTION:
if ((session->config->ban_on_sqli > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), session->config->ban_on_sqli, session->config->kick_on_ban);
hostname = (session->hostname != NULL) ? session->hostname : unknown_host;
log_system(session, "Client banned because of SQL injection on %s", hostname);
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
session->return_code = 441;
send_code(session);
log_request(session);
break;
case ec_XSS:
session->return_code = 442;
send_code(session);
log_request(session);
break;
case ec_CSRF:
session->return_code = 443;
send_code(session);
log_request(session);
break;
case ec_INVALID_URL:
if ((session->config->ban_on_invalid_url > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), session->config->ban_on_invalid_url, session->config->kick_on_ban);
hostname = (session->hostname != NULL) ? session->hostname : unknown_host;
log_system(session, "Client banned because of invalid URL on %s", hostname);
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
send_code(session);
break;
default:
if (session->data_sent == false) {
session->return_code = 500;
if (send_code(session) == -1) {
session->keep_alive = false;
}
}
} else switch (result) {
case 200:
break;
case 201:
case 204:
case 304:
case 412:
if (session->data_sent == false) {
session->return_code = result;
if (send_header(session) == -1) {
session->keep_alive = false;
} else if (send_buffer(session, "Content-Length: 0\r\n\r\n", 21) == -1) {
session->keep_alive = false;
}
}
break;
case 411:
case 413:
session->keep_alive = false;
if (session->data_sent == false) {
session->return_code = result;
if (send_header(session) == -1) {
session->keep_alive = false;
} else if (send_buffer(session, "Content-Length: 0\r\n\r\n", 21) == -1) {
session->keep_alive = false;
}
}
break;
case 400:
log_garbage(session);
if (session->data_sent == false) {
session->return_code = 400;
if (send_code(session) == -1) {
session->keep_alive = false;
}
}
if ((session->config->ban_on_garbage > 0) && (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny)) {
ban_ip(&(session->ip_address), session->config->ban_on_garbage, session->config->kick_on_ban);
log_system(session, "Client banned because of sending garbage");
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_bad_request(session);
}
#endif
break;
case 401:
case 403:
case 404:
case 501:
case 503:
if (session->data_sent == false) {
switch (handle_error(session, result)) {
case -1:
session->keep_alive = false;
break;
case 200:
break;
default:
if (session->data_sent == false) {
session->return_code = result;
if (send_code(session) == -1) {
session->keep_alive = false;
}
}
}
}
break;
case 500:
session->keep_alive = false;
default:
if (session->data_sent == false) {
session->return_code = result;
send_code(session);
}
}
if ((result > 0) && (result != 400)) {
log_request(session);
} else {
session->keep_alive = false;
}
}
/* Handle the connection of a client.
*/
static void connection_handler(t_session *session) {
int result;
#ifdef ENABLE_SSL
t_ssl_accept_data sad;
#endif
#ifdef ENABLE_DEBUG
session->current_task = "thread started";
#endif
#ifdef ENABLE_SSL
if (session->binding->use_ssl) {
sad.context = &(session->ssl_context);
sad.client_fd = &(session->client_socket);
sad.private_key = session->binding->private_key;
sad.certificate = session->binding->certificate;
sad.ca_certificate = session->binding->ca_certificate;
sad.ca_crl = session->binding->ca_crl;
sad.timeout = session->kept_alive == 0 ? session->binding->time_for_1st_request : session->binding->time_for_request;
sad.min_ssl_version = session->config->min_ssl_version;
sad.dh_size = session->config->dh_size;
#ifdef ENABLE_DEBUG
sad.thread_id = session->thread_id;
session->current_task = "ssl accept";
#endif
switch (ssl_accept(&sad)) {
case SSL_HANDSHAKE_NO_MATCH:
log_system(session, "No cypher overlap during SSL handshake.");
break;
case SSL_HANDSHAKE_TIMEOUT:
handle_timeout(session);
break;
case SSL_HANDSHAKE_OKE:
session->socket_open = true;
break;
}
} else
#endif
session->socket_open = true;
if (session->socket_open) {
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_connection(session);
}
#endif
do {
result = serve_client(session);
handle_request_result(session, result);
#ifdef ENABLE_TOMAHAWK
if (session->parsing_oke) {
show_request_to_admins(session->method, session->request_uri, session->http_version, &(session->ip_address),
session->http_headers, session->return_code, session->bytes_sent);
}
#endif
#ifdef ENABLE_DEBUG
session->current_task = "request done";
#endif
if (session->socket_open) {
/* Flush the output-buffer
*/
if (send_buffer(session, NULL, 0) == -1) {
session->keep_alive = false;
}
}
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_host(session);
}
#endif
reset_session(session);
#ifdef ENABLE_DEBUG
session->current_task = "session reset";
#endif
if ((session->kept_alive > 0) && (session->config->ban_on_flooding > 0)) {
if (client_is_flooding(session)) {
if (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny) {
ban_ip(&(session->ip_address), session->config->ban_on_flooding, session->config->kick_on_ban);
log_system(session, "Client banned because of flooding");
session->keep_alive = false;
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_count_ban(session);
}
#endif
}
}
}
} while (session->keep_alive && session->socket_open);
#ifdef ENABLE_DEBUG
session->current_task = "session done";
#endif
destroy_session(session);
close_socket(session);
} else {
close(session->client_socket);
}
if (session->config->reconnect_delay > 0) {
mark_client_for_removal(session, session->config->reconnect_delay);
} else {
remove_client(session, true);
}
#ifdef ENABLE_DEBUG
/* Show memory usage by thread
*/
memdbg_print_log(false);
#endif
/* Client session ends here
*/
#ifndef ENABLE_THREAD_POOL
pthread_exit(NULL);
#endif
}
/* Handle the connection of a client.
*/
static void connection_handler(t_session *session) {
int result;
#ifdef ENABLE_SSL
t_ssl_accept_data sad;
#endif
#ifdef ENABLE_MONITOR
int connections;
#ifdef ENABLE_DEBUG
session->current_task = "thread started";
#endif
connections = ++open_connections;
if (session->config->monitor_enabled) {
if (connections > session->config->monitor_stats.simultaneous_connections) {
session->config->monitor_stats.simultaneous_connections = connections;
}
}
#endif
#ifdef ENABLE_SSL
if (session->binding->use_ssl) {
sad.context = &(session->ssl_context);
sad.client_fd = &(session->client_socket);
sad.private_key = session->binding->private_key;
sad.certificate = session->binding->certificate;
sad.ca_certificate = session->binding->ca_certificate;
sad.ca_crl = session->binding->ca_crl;
sad.timeout = session->kept_alive == 0 ? session->binding->time_for_1st_request : session->binding->time_for_request;
sad.min_ssl_version = session->config->min_ssl_version;
sad.dh_size = session->config->dh_size;
#ifdef ENABLE_DEBUG
session->current_task = "ssl accept";
#endif
switch (ssl_accept(&sad)) {
case -2:
handle_timeout(session);
break;
case 0:
session->socket_open = true;
break;
}
} else
#endif
session->socket_open = true;
if (session->socket_open) {
do {
result = serve_client(session);
handle_request_result(session, result);
#ifdef ENABLE_DEBUG
session->current_task = "request done";
#endif
if (session->socket_open) {
send_buffer(session, NULL, 0); /* Flush the output-buffer */
}
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_counter_request(session);
if (session->host->monitor_requests && (result > 0)) {
monitor_request(session);
}
}
#endif
reset_session(session);
#ifdef ENABLE_DEBUG
session->current_task = "session reset";
#endif
if ((session->kept_alive > 0) && (session->config->ban_on_flooding > 0)) {
if (client_is_flooding(session)) {
if (ip_allowed(&(session->ip_address), session->config->banlist_mask) != deny) {
ban_ip(&(session->ip_address), session->config->ban_on_flooding, session->config->kick_on_ban);
log_system(session, "Client banned because of flooding");
session->keep_alive = false;
#ifdef ENABLE_MONITOR
if (session->config->monitor_enabled) {
monitor_counter_ban(session);
}
#endif
}
}
}
} while (session->keep_alive && session->socket_open);
#ifdef ENABLE_DEBUG
session->current_task = "session done";
#endif
destroy_session(session);
close_socket(session);
} else {
close(session->client_socket);
}
#ifdef ENABLE_MONITOR
open_connections--;
#endif
if (session->config->reconnect_delay > 0) {
mark_client_for_removal(session, session->config->reconnect_delay);
} else {
remove_client(session, true);
}
/* Client session ends here
*/
#ifndef ENABLE_THREAD_POOL
pthread_exit(NULL);
#endif
}
/* Log a HTTP request.
*/
void log_request(t_session *session) {
char str[BUFFER_SIZE + 1], timestamp[TIMESTAMP_SIZE], ip_address[IP_ADDRESS_SIZE];
char *user, *field, *uri, *vars, *path_info;
t_http_header *http_header;
int offset;
time_t t;
struct tm s;
if (ip_allowed(&(session->ip_address), session->config->logfile_mask) == deny) {
return;
}
str[BUFFER_SIZE] = '\0';
#ifdef ENABLE_TOOLKIT
if (session->request_uri == NULL) {
#endif
uri = secure_string(session->uri);
path_info = secure_string(session->path_info);
vars = secure_string(session->vars);
#ifdef ENABLE_TOOLKIT
} else {
uri = secure_string(session->request_uri);
path_info = NULL;
vars = NULL;
}
#endif
if ((user = session->remote_user) != NULL) {
user = secure_string(user);
}
if (session->config->log_format == hiawatha) {
/* Hiawatha log format
*/
if (session->config->anonymize_ip) {
anonymized_ip_to_str(str, &(session->ip_address), IP_ADDRESS_SIZE);
} else {
ip_to_str(str, &(session->ip_address), IP_ADDRESS_SIZE);
}
strcat(str, "|");
offset = strlen(str);
print_timestamp(str + offset);
offset += strlen(str + offset);
if (user == NULL) {
user = "";
}
snprintf(str + offset, BUFFER_SIZE - offset, "%d|%lld|%s|%s %s", session->return_code, (long long)session->bytes_sent, user, secure_string(session->method), uri);
offset += strlen(str + offset);
if ((offset < BUFFER_SIZE) && (path_info != NULL)) {
snprintf(str + offset, BUFFER_SIZE - offset, "/%s", path_info);
offset += strlen(str + offset);
}
if ((offset < BUFFER_SIZE) && (vars != NULL)) {
snprintf(str + offset, BUFFER_SIZE - offset, "?%s", vars);
offset += strlen(str + offset);
}
if (offset < BUFFER_SIZE) {
snprintf(str + offset, BUFFER_SIZE - offset, " %s", secure_string(session->http_version));
offset += strlen(str + offset);
}
if (offset < BUFFER_SIZE) {
http_header = session->http_headers;
while (http_header != NULL) {
if ((strncasecmp("Cookie:", http_header->data, 7) != 0) && (strncasecmp("Authorization:", http_header->data, 14) != 0)) {
snprintf(str + offset, BUFFER_SIZE - offset, "|%s", secure_string(http_header->data));
if ((offset += strlen(str + offset)) >= BUFFER_SIZE) {
break;
}
}
http_header = http_header->next;
}
}
} else {
/* Common Log Format
*/
if (session->config->anonymize_ip) {
anonymized_ip_to_str(ip_address, &(session->ip_address), IP_ADDRESS_SIZE);
} else {
ip_to_str(ip_address, &(session->ip_address), IP_ADDRESS_SIZE);
}
if (user == NULL) {
user = "******";
}
time(&t);
localtime_r(&t, &s);
timestamp[TIMESTAMP_SIZE - 1] = '\0';
strftime(timestamp, TIMESTAMP_SIZE - 1, "%d/%b/%Y:%T %z", &s);
snprintf(str, BUFFER_SIZE, "%s - %s [%s] \"%s %s", ip_address, user, timestamp, secure_string(session->method), uri);
offset = strlen(str);
if ((offset < BUFFER_SIZE) && (path_info != NULL)) {
snprintf(str + offset, BUFFER_SIZE - offset, "/%s", path_info);
offset += strlen(str + offset);
}
if ((offset < BUFFER_SIZE) && (vars != NULL)) {
snprintf(str + offset, BUFFER_SIZE - offset, "?%s", vars);
offset += strlen(str + offset);
}
if (offset < BUFFER_SIZE) {
snprintf(str + offset, BUFFER_SIZE - offset, " %s\" %d %lld", secure_string(session->http_version), session->return_code, (long long)session->bytes_sent);
}
if (session->config->log_format == extended) {
/* Extended Common Log Format
*/
offset += strlen(str + offset);
if (offset < BUFFER_SIZE) {
if ((field = get_http_header("Referer:", session->http_headers)) != NULL) {
snprintf(str + offset, BUFFER_SIZE - offset, " \"%s\"", secure_string(field));
} else {
snprintf(str + offset, BUFFER_SIZE - offset, " \"-\"");
}
offset += strlen(str + offset);
}
if (offset < BUFFER_SIZE) {
if ((field = get_http_header("User-Agent:", session->http_headers)) != NULL) {
snprintf(str + offset, BUFFER_SIZE - offset, " \"%s\"", secure_string(field));
} else {
snprintf(str + offset, BUFFER_SIZE - offset, " \"-\"");
}
}
}
}
pthread_mutex_lock(&accesslog_mutex);
if (*(session->host->access_fp) == NULL) {
*(session->host->access_fp) = fopen(session->host->access_logfile, "a");
}
if (*(session->host->access_fp) != NULL) {
fprintf(*(session->host->access_fp), "%s"EOL, str);
fflush(*(session->host->access_fp));
}
pthread_mutex_unlock(&accesslog_mutex);
}
